Mechanical stoker.



PATENTED MAY 17, 1904.

J. J. BURWELL. MECHANICAL STOKER. APPLICIATION FILED SEPT,28,1903. N0 MODEL. 2 SHBETS-SHEET 1.

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0 4441 x wm m Maw/44M PATBNTBD MAY 17, 1904.

J. J. BURWELL. MECHANICAL STOKER. APPLIOATION FILED 82M. 2a, 1903.

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Patented May a, 1904.

SPECIFICATION" forming part of Letters Patent No. 759,359, dated May 17, 1904.. 7 Application filed September 28, 1903. Berial No- 174,925. (No model.)

To all whom it may concern: 1

Be it known that l, JOHN J. BURWELL, a citizen of the United States, residing at Central (Jovington, in the county of Kenton and State of Kentucky, have invented certain new and useful llmprovements in Mechanical Stokers, of which the following is a specification.

My invention relates to mechanical stokers, and has for its object the providing of new and improved means whereby the fuel may be fed to the furnace and new and improved .4

means whereby the fuel may be crushed or broken during the feeding operation, and the invention will be readily understood from the following description and claims and from the drawings, in which Figure 1 is a side elevation of my improved device shown in connection with a locomotive k and tender, parts of the latter being broken away. Fig. 2 is a front elevationtof my improved device. Fig. 3 1s a perspective view of a detail of the conveyor. Fig. 4 is a side elevation of my improved device with a sideof the frame removed for better illustration. Fig. 5 is a front elevationof the fire-boxdoor. Fig. 6 is aside elevation of the same. Fig. 7 is a plan View of a detail of the gearing for the conveyer. Fig. 8 is a front elevation of my improved device, showing amodified form of conveyor with the front plate removed. Fig. 9 is a plan view of the same with the top plate removed. Fig. 10 is a cross-section of the same on the line a: {L' of Fig.8, and Fig. 11 is a detail of the crushers in cross-section on the line 2 e of Fig. 8.

A represents a locomotivetender; B, a locomotive, of which C is the fire-box, and D g the door-opening for the fire-box.

lid is the floor of the tender, F its side wall, and bi the usual coal or fuel space in the tender.

The tend'cr and locomotive may be of ordi nary construction. A frame H is placed in the coal-space and is adapted to support the operative parts of my improved device. These consist, essentially, of crushers I T, turned in manner hereinafter explained, a conveyer K, and a feeder N. The frame, box, or casing H is adapted to be placed at the front or fire-box end of the coal-space in the tender and is arranged to be moved backwardly against the coal as the coal is consumed, so that the crushers may at all times impinge against the coal for feeding it into the conveyor and hopper. i have shown these crushers arranged in pairs at the lower end of shafts t z", journaled in bearing 1 2 in the frame. The respecti ve shafts t' have bevel-gears 3 secured thereto, respectively adapted to mesh with bevel-gears on a shaft 5-, suitably journaled in the frame. A shaft 6 has a spurear 7, meshing a spurgear 8, on which is a bevel-gear 9, meshing a bevel-gear 10 on one of the shafts t for driving'the latter and shaft 5. A suitable motor 11, mounted on the frame, drives thev shaft 6. 12 is a fly-wheel on the shaft 6,with which the motor connects. The crushers H preferably have ribs 5 for aiding in the crushing and feeding operation. if desired, one of the bevel-gears 4: may be releasably engaged with itsmate 3, as by the spline 13 and set-screw 14, for throwing one of the pair of ClllShBl'S into or out of operation, thereby regulating the feed of fuel. The crushed fuel is conveyed to a hopper M by means of the conveyers K. The conveyers preferably consist of buckets 21, secured to chains 22 23, taleing over sprocket-wheels 2d 25 26, mounted, respectively, on the shafts 6 2728. The sprocket-wheels 24 are driven by the shaft 6, thereby driving the conveyer. The shafts 27 28 are each mounted in a rear bearing 29 ina depending bracket 30, secured to a crossplate 31 of the frame, and in ,a front bearing 32 on a door 33, preferably removable. The

bearing 32 has a removable cap 34, held in place bya set-screw 35. Aslot 36 is provided for permitting looseness of parts when the cap is removed when it is desired to remove the door. vide ready access to the fuel with an ordinary shovel if it is desired to throw the conveyor out of operation. When so thrown out of operation, the shafts 27 28, with theirsprocket wheels, may be removed and the buckets and chains raised out of the way and supported in raised position in any desirable manner.

l The door maybe supported on lugs 3.? at the The purpose of the door is to pro-' ing the coal in the wardly into the tender rear, rest against shoulders 38, and at the top take under the front plate 39 of the frame, suitable hasps 40 holding the door in place.

In order to keep the crushers pressed against the coal, I provide a rack 41 on the tender at each side of the coal-space, a wheel 42, journaled in a bracket 43 on the box, engaging the rack. A-lever i4 has a pin 45 engaging etween the teeth of the wheel, arranged to be retracted in well-known manner by a grip 46 and connection 47, a spring being provided for normally keeping the pin into engagement with the teeth of' wheel 42. If it is desired to press the frame against the coal, the pin is engaged with the teeth of the gear and power applied to the lever for turning the gear, which, traveling on the rack, forces the frame to position. When the pin is in engagement with the teeth, the frame is locked in position on the rack. One of these racks and gears is preferably provided at each side of the box. If desired, a shield #18, supported from the cross-plate 31, -may be placed be- I tween adjacent pairs of crushers to prevent coa'l being drawn back into the coal-space. The rear of the frame has a wall 51 for supporttender, thereby forming a gate for the fuel. My improved device thereby serves the function of an ordinary coalgate on the tender, while serving as a crusher and conveyer. The frame may also have a lid 52, suitably hinged, if desired.

As before stated, the conveyers K discharge into a hopper M, from which a chute N or feeder extends to the lire-box C. The chute N is composed of preferably telescope sections '11, so that as the box is moved backthe chute may be extended to span the additional distance between the frame and tire-box. The door of the firebox may be provided withvan aperture 55, having a thimble 56 for the end of the chute, through which the coal passes. A releasable connection is made between the door and chute by a pin 57. The hopper is provided with a thimble 58, to which the chute is releasably secured by a pin 59. The door is also provided with a secondary door 63, through which the progress of the fire may be inspected or a poker or other instrument introduced. The door also has a bafiie-plate tie-projecting inwardly and downwardly toward the grating of the fire-box for directing the coal downwardl y toward the grating. The draft of the locomotive will aid in drawing the coal from the hopper into the fire-box, and the bafiieplate will direct the coal toward the grating of the tire-box. The baffle-plate is preferably hinged, as at 65, a handle 66 projecting outside the door, by means of which the angle of the bathe-plate may be adjusted for directing the coal downwardly toward the front of the fire-box or permitting the coal to spread, thereby further regulating the fire. The baffleplate is positioned at desired angle by a pin have a wheel 89.

67, passing through the handle and through selective holes in an are 68.

In order to drive the motor, I run a flexible steam-pipe 71 from the locomotive to the motor, a releasable connection 72 being placed therein.

In Figs. 8, 9, and 10 I have shown a modified form of conveyer, consisting of spirals 75 76, turning in shells 77 7 8, each conducting the coal through an opening (shown at 79) into a hopper 80, from which it is conveyed by chute, as already explained. When using the spiral conveyer, I drive the shaft 5 from a shaft 81, to which the fly-wheel 12 is secured, a bevel-gear 82 on the shaft 81 meshing with a bevel-gear 83 on the shaft 5. I drive the spiral conveyers by means of the shafts i and spur-gears 86 on the shafts of the spiral conveyers, intermediate spurgears (shown at 87 and 88, respectively) connecting the gears on the respective shafts v7 and shafts of the spiral conveyers' I have described my invention in connection with a locomotive and tender; but it is obvious that it can be employed in other relations.

The frame may at each side toward its rear The frame rides on these wheels 89 and the wheels 42 for permitting the crushers to just clear the floor of the tender. In practice the coal will when being removed from a full tender first drop from the position next to the frame above the crushers and as the tender is being emptied slant from the rear of the tender toward the crushers, the framing being pressed backwardly against the coal as the coal is consumed.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, isr 1. In a mechanical stoker, the combination with a coal-receptacle, of a fuel-cruslwr and a fuel-conveyer arranged in juxtaposition and movable in said coal-receptacle, substantially as described. 1

2. In a'mechanical stoker, the combination with a coal-receptacle, of a fuel-crusher and a fuel-conveyer arranged in juxtaposition, a furnace, an extensible conveyer between said first-named conveyer and said furnace, and means for moving said fuel-crusher and fuelconveyer in said coal-receptacle, substantially as described. 7

3. In a mechanical stoker, the combination, with a coal-receptacle, of a fuel-crusher and a conveyer arranged in juxtaposition and movable in said coal-receptacle, a hopper at the end of the fuel-conveyer and a telescope chute projecting from the hopper, substantially described.

4. In combination with a locomotive and its tender, of a fuel-crusher and a fuel-conveyer movable on the tender, with relation to the body of coal therein, a tire-box on the locomotive, and an elongatable chute between the conveyer and the lire-box.

spur-gears on to be placed ad acent to the veyer on the framing and movable therewith..

and an elongatable chute connecting the framing with the locomotive.

7. In a mechanical Stoker, the combination of vertically-disposed crushers adapted to be placed adjacent to the floor of the coal-receptacle, a hopper, a bucket conveyer for conveying the coal between the crushers and the hopper, andan elongatable chute, substan tially as described. 1

8. In a mechanical stoker, the combination with the framing, of vertically-disposed crushers mounted in theframing adjacent to its bottom, a hopper in the framing, a bucket conveyer in the framing between the crushers and the hopper, and a telescope chute, substantially as described.

9. In combination, with a locomotive andits tender, said tender having a fuel-space, of a combined movable fnelgate and fuel-conveyer movable toward and from said locomotive in said fuel-space, substantially as described.

10. In combination with a locomotive and its tender, of a fuel-conveyer located on the tender, an elongat'able tween the tender and the locomotive, a motor von the tender for operating the fuel-conveyer,

and releasable flexible connection between said motor and the locomotive for conveying power to said motor.

11. In combination with a locomotive and its tender, of a frame adjustable on the tender, a fuel-crusher and a fuel-conveyer with amotor for driving the same located on and movable with said frame, an elongatable chute between said frame and the locomotive for conveying the coal to the locomotive, and a flexible connection between the locomotive and said motor, for conveying power to said motor.

12. In a mechanical Stoker, the combination of the vertically-disposed crushers I I adapted to be placed adjacent to the floor of the coalreceptacle, a hopper, and a conveyer for conveying the coal between the crushers and hopper, siibstautially as described.

13. of the vertically-disposed crushers I 1 adapted floor of the coalreceptacle and having ribs a hopper, and a coal between the conveyer for conveying the substantially as decrusliers and the hopper, scribed;

fuel connection bepositioning the framing n a mechanical stoker, the combination ing said fuel to the 14. In a mechanical stoker, of the vertically-disposed crushers II adapted to be placed adjacent to the floor of the coalreceptacle, a hopper, a conveyer for conveying the coal between the crushers and hopper, a shaft and gearing for driving said crushers, and means permitting ing connection of part of said gearing.

15. In a mechanical stoker, the combination with thelocomotive and its tender, of a fuelcrusher adjacent to the floor of said tender, a hopper, a fuel-conveyer from said crusher to said hopper, and an inclined chute between said hopper and the firebox ofthe locomotive- 16. In a mechanical Stoker, the combination with the locomotive and its tender, of a fuelcrusher adjacent to the floor of said tender, a hopper, a fuel-conveyer from said crusher to said hopper, and an inclined chute between said hopper and the lirc-box of the locomotive, and a bafile-plate between the said chute and the fire-box.

17. In a mechanical stoker, the combination I with the locomotive and its tender, of a fuelconveyer operating adjacent to the floor of the tender, araised hopper on the tender to which said fuel is fed by said conveyer, and an inclined chute from said hopper for conveyfire-box of the locomotive.

18. In a mechanical stoker, the combination with the locomotive and its tender, of a fuelto the floor of hopper to which said fuel conveyer, an inclined chute conveyer operating adjacent the tender, a raised is fed by said from said hopper for conveying said fuel to the fire-box of the locomotive,

and an adjustable bafile-plate chute and the fire-box.

19. In a mechanical stoker, the combination of a fuel-receptacle, a fire-box, fuel-crushers between said the combination disconnection of drivextending up and down and arranged side by side, a hopper, a bucket in front and transversely of said crushers and conveying the fuel from said crushers to said hopper, and a chute between said hopper and the fire-box, substantially as described.

20. In a mechanical stoker, the combination with a locomotive and its tender, of a fuel-. conveyer for conveying the fuel from the tender to the locomotive and comprisinga chute,

conveyer trav eling and a bafile-plate in the lire-box of the locomotive positioned above the mouth of said chute, and means for adjusting said baflieplate for depending more or less in front of the mouth of said chute above'the fuel passing therethrough for directing the fuel more or less downwardly, substantially as described.

In witness whereof I have signed my name hereto in the presence of two subscribing witnesses.

JOHN J. BURWEI L.

Witnesses: I

Aneusw F.,HERBSLE1 3, Harm N. BAUER. 

